142021074 has 16 divisors (see below), whose sum is σ = 305891712. Its totient is φ = 43698768.

The previous prime is 142021057. The next prime is 142021097. The reversal of 142021074 is 470120241.

It is a happy number.

It is a super-2 number, since 2×142021074² = 40339970920226952, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 142021074.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 910314 + ... + 910469.

It is an arithmetic number, because the mean of its divisors is an integer number (19118232).

Almost surely, 2^142021074 is an apocalyptic number.

142021074 is an abundant number, since it is smaller than the sum of its proper divisors (163870638).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142021074 is a wasteful number, since it uses less digits than its factorization.

142021074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1820801.

The product of its (nonzero) digits is 448, while the sum is 21.

The square root of 142021074 is about 11917.2595004053. The cubic root of 142021074 is about 521.7361520923.

The spelling of 142021074 in words is "one hundred forty-two million, twenty-one thousand, seventy-four".